<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title></title>
    <style>
    .red,.green{
      width: 200px;
      height: 80px;
    }
    .red {
      background-color: red;
    }
    .green {
      background-color: green;
      /* box-shadow: 2px 5px 10px 0 blue inset; */
      box-shadow: 2px 5px 10px 0 blue ;
    }
    </style>
    <link href="css/style.css" rel="stylesheet">
  </head>
  <body>
  <div class="red"></div>
  <div class="green"></div>
  </body>
</html>
